monocycle

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

From mono- + cycle, thus literally "one wheel".

Along the outer tracks hummed and rattled the tardy little old-fashioned motors of such as had duties within twenty miles or so of the city; the inner ways were filled with vaster mechanisms--swift monocycles bearing a score of men, lank multicycles, quadricycles sagging with heavy loads, empty gigantic produce carts that would come back again filled before the sun was setting, all with throbbing engines and noiseless wheels and a perpetual wild melody of horns and gongs. — Tales of Space and Time, H. G. (Herbert George) Wells

unicycle

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